I believe this can vary depending on the itinerary. It will be a sea day. In the past, there would be a paper invitation in your stateroom, it might be an app message now.
On the Magic, ours was also a behind the scenes. Invitation to a 10:30 event. Everyone in seats in WDT within 5 minutes, drinks in hand. Announcement at 10:55 that party would begin in 5 minutes to allow everyone to arrive. (Maybe prior statement 20 minutes into waiting.). We were out of there at 11:30 or 11:45 (I remember the $7500 BINGO session had started at 11 am.). Mickey bars available as we were leaving.
We have three sea days and we picked the second one for brunch. Of course it's all sold out now. Guess we'll see what happens I'd still be able to send our kids who are Platinum and will be 12&15 perhaps???
GET UP TO A $1000 SHIPBOARD CREDIT AND AN EXCLUSIVE GIFT!
If you make your Disney Cruise Line reservation with Dreams Unlimited Travel you’ll receive these incredible shipboard credits to spend on your cruise!